WID-SEC-W-2022-0001
Vulnerability from csaf_certbund
Published
2021-08-26 22:00
Modified
2024-05-07 22:00
Summary
libssh: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
libssh ist eine C Bibliothek für das Anbieten von SSH Diensten auf Client- und Serverseite. Sie kann genutzt werden, um aus der Ferne Programme auszuführen, Dateien zu übertragen oder als sicherer und transparenter Tunnel für entfernte Programme genutzt werden.
Angriff
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in libssh ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme
- Linux - UNIX


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "libssh ist eine C Bibliothek f\u00fcr das Anbieten von SSH Diensten auf Client- und Serverseite. Sie kann genutzt werden, um aus der Ferne Programme auszuf\u00fchren, Dateien zu \u00fcbertragen oder als sicherer und transparenter Tunnel f\u00fcr entfernte Programme genutzt werden.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in libssh ausnutzen, um Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2022-0001 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0001.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2022-0001 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0001"
      },
      {
        "category": "external",
        "summary": "LibSSH Security Advisory vom 2021-08-26",
        "url": "https://www.libssh.org/security/advisories/CVE-2021-3634.txt"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Advisory vom 2021-08-26",
        "url": "https://ubuntu.com/security/notices/USN-5053-1"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-4965 vom 2021-08-31",
        "url": "https://www.debian.org/security/2021/dsa-4965"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4863 vom 2022-06-01",
        "url": "https://access.redhat.com/errata/RHSA-2022:4863"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4880 vom 2022-06-02",
        "url": "https://access.redhat.com/errata/RHSA-2022:4880"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4692 vom 2022-05-19",
        "url": "https://access.redhat.com/errata/RHSA-2022:4692"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4690 vom 2022-05-19",
        "url": "https://access.redhat.com/errata/RHSA-2022:4690"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4691 vom 2022-05-19",
        "url": "https://access.redhat.com/errata/RHSA-2022:4691"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4671 vom 2022-05-20",
        "url": "https://access.redhat.com/errata/RHSA-2022:4671"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 6589939 vom 2022-05-26",
        "url": "https://www.ibm.com/blogs/psirt/security-bulletin-ibm-mq-operator-and-queue-manager-container-images-are-vulnerable-to-multiple-vulnerabilities-from-gzip-jackson-databind-libssh-gnutls-nettle-and-zlib/"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4956 vom 2022-06-09",
        "url": "https://access.redhat.com/errata/RHSA-2022:4956"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:4985 vom 2022-06-09",
        "url": "https://access.redhat.com/errata/RHSA-2022:4985"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:2031 vom 2022-05-10",
        "url": "https://access.redhat.com/errata/RHSA-2022:2031"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory ASA-2022-057 vom 2022-05-11",
        "url": "https://downloads.avaya.com/css/P8/documents/101081750"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:5188 vom 2022-06-25",
        "url": "https://access.redhat.com/errata/RHSA-2022:5188"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:5483 vom 2022-07-01",
        "url": "https://access.redhat.com/errata/RHSA-2022:5483"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2022:5525 vom 2022-07-08",
        "url": "https://access.redhat.com/errata/RHSA-2022:5525"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 6831853 vom 2022-10-26",
        "url": "https://www.ibm.com/blogs/psirt/security-bulletin-ibm-qradar-siem-application-framework-base-image-is-vulnerable-to-using-components-with-known-vulnerabilities-3/"
      },
      {
        "category": "external",
        "summary": "Gentoo Linux Security Advisory GLSA-202312-05 vom 2023-12-23",
        "url": "https://security.gentoo.org/glsa/202312-05"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:0539-1 vom 2024-02-20",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-February/017974.html"
      },
      {
        "category": "external",
        "summary": "Dell Security Advisory DSA-2024-198 vom 2024-05-08",
        "url": "https://www.dell.com/support/kbdoc/000224827/dsa-2024-="
      }
    ],
    "source_lang": "en-US",
    "title": "libssh: Schwachstelle erm\u00f6glicht Umgehen von Sicherheitsvorkehrungen",
    "tracking": {
      "current_release_date": "2024-05-07T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T17:25:42.860+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2022-0001",
      "initial_release_date": "2021-08-26T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-08-26T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-08-31T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2021-09-21T22:00:00.000+00:00",
          "number": "3",
          "summary": "Referenz(en) aufgenommen: FEDORA-2021-EC797B6A96"
        },
        {
          "date": "2021-09-22T22:00:00.000+00:00",
          "number": "4",
          "summary": "Referenz(en) aufgenommen: FEDORA-2021-F2A020A065, FEDORA-2021-288925AC19"
        },
        {
          "date": "2022-05-10T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-05-11T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2022-05-18T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-05-19T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-05-26T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von IBM aufgenommen"
        },
        {
          "date": "2022-06-01T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-06-08T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-06-09T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-06-26T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-07-03T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-07-07T22:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2022-10-25T22:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von IBM aufgenommen"
        },
        {
          "date": "2023-12-26T23:00:00.000+00:00",
          "number": "17",
          "summary": "Neue Updates von Gentoo aufgenommen"
        },
        {
          "date": "2024-02-20T23:00:00.000+00:00",
          "number": "18",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2024-05-07T22:00:00.000+00:00",
          "number": "19",
          "summary": "Neue Updates von Dell aufgenommen"
        }
      ],
      "status": "final",
      "version": "19"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Avaya Aura Application Enablement Services",
            "product": {
              "name": "Avaya Aura Application Enablement Services",
              "product_id": "T015516",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_application_enablement_services:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Communication Manager",
            "product": {
              "name": "Avaya Aura Communication Manager",
              "product_id": "T015126",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:communication_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Experience Portal",
            "product": {
              "name": "Avaya Aura Experience Portal",
              "product_id": "T015519",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_experience_portal:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Session Manager",
            "product": {
              "name": "Avaya Aura Session Manager",
              "product_id": "T015127",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:session_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura System Manager",
            "product": {
              "name": "Avaya Aura System Manager",
              "product_id": "T015518",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_system_manager:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Avaya"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "virtual",
                "product": {
                  "name": "Dell NetWorker virtual",
                  "product_id": "T034583",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:dell:networker:virtual"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "NetWorker"
          }
        ],
        "category": "vendor",
        "name": "Dell"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "EMC Avamar",
            "product": {
              "name": "EMC Avamar",
              "product_id": "T014381",
              "product_identification_helper": {
                "cpe": "cpe:/a:emc:avamar:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "EMC"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Gentoo Linux",
            "product": {
              "name": "Gentoo Linux",
              "product_id": "T012167",
              "product_identification_helper": {
                "cpe": "cpe:/o:gentoo:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Gentoo"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "7.5",
                "product": {
                  "name": "IBM QRadar SIEM 7.5",
                  "product_id": "T022954",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:qradar_siem:7.5"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "7.4",
                "product": {
                  "name": "IBM QRadar SIEM 7.4",
                  "product_id": "T024775",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:qradar_siem:7.4"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "QRadar SIEM"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c0.9.6",
                "product": {
                  "name": "Open Source libssh \u003c0.9.6",
                  "product_id": "T020269"
                }
              }
            ],
            "category": "product_name",
            "name": "libssh"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-3634",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in libssh. Der Fehler besteht aufgrund eines Heap-Puffer-\u00dcberlaufs, wenn ein Rekey mit dem Schl\u00fcsselaustauschalgorithmus angefordert wird, der einen Digest unterschiedlicher Gr\u00f6\u00dfe verwendet. Ein entfernter authentisierter Angreifer kann diese Schwachstelle ausnutzen, um Sicherheitsma\u00dfnahmen zu umgehen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T015519",
          "T015518",
          "67646",
          "T015516",
          "T034583",
          "T015127",
          "T015126",
          "T012167",
          "T022954",
          "T014381",
          "2951",
          "T002207",
          "T000126",
          "T024775"
        ]
      },
      "release_date": "2021-08-26T22:00:00.000+00:00",
      "title": "CVE-2021-3634"
    }
  ]
}


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